at-diff

at-diff is a tool to compare different versions of a source code which uses the Aria Templates framework.

Unlike the traditional diff utility which mainly compares lines without interpreting them, at-diff mainly compares class methods or bean definitions and takes into account inheritance. By listing possible impacts, it aims at detecting breaking changes, and at helping a developer to update some source code when one of the libraries it uses changed.

Note that you should not rely only on at-diff to find possible breaking changes. at-diff does not replace tests. It cannot detect all breaking changes.